Fotos

Photographer's Note

The incandescent light bulb, incandescent lamp or incandescent light globe makes light by heating a metal filament wire to a high temperature until it glows. The hot filament is protected from air by a glass bulb that is filled with inert gas or evacuated. In a halogen lamp, a chemical process returns metal to the filament, extending its life. The light bulb is supplied with electrical current by feed-through terminals or wires embedded in the glass. Most bulbs are used in a socket which supports the bulb mechanically and connects the current supply to the bulb's electrical terminals.
Incandescent bulbs are produced in a wide range of sizes, light output, and voltage ratings, from 1.5 volts to about 300 volts. They require no external regulating equipment, have low manufacturing costs, and work equally well on either alternating current or direct current. As a result, the incandescent lamp is widely used in household and commercial lighting, for portable lighting such as table lamps, car headlamps, and flashlights, and for decorative and advertising lighting.
_________
more on wikipedia

Kofman, abmdsudi, Budapestman, delpeoples marcou esta nota como útil

Photo Information
Viewed: 1452
Points: 28
Discussions
  • None
Additional Photos by Daniel Draghici (dkmurphys) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 5849 W: 83 N: 11987] (79209)
View More Pictures
explore TREKEARTH